Tak jsem našel řešení:
That's about all there is. There's not much to stacking bonuses. Just remember the basic rules:
Bonuses with different names stack.
Bonuses with the same names overlap (don't stack)
Bonuses with no names stack with any other bonuses (but not with themselves).
And remember the major exceptions:
Dodge bonuses stack with each other.
Circumstance bonuses stack when they arise from different circumstances.
(viz. http://www.wizards.com/default.asp?x=dnd/rg/20040210a)
A měl jsem pravdu!:-)